1OQH:
reference: Structural and functional consequences of binding site mutations in transferrin: crystal structures of the Asp63Glu and Arg124Ala mutants of the N-lobe of human transferrin., Baker HM, He QY, Briggs SK, Mason AB, Baker EN, Biochemistry 2003 Jun 17;42(23):7084-9. PMID: 12795604

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